﻿// -----------------------------------------------------------------------
// <copyright file="ViewModelBase.cs" company="">
//
// The MIT License (MIT)
// 
// Copyright (c) 2012 Christoph Gattnar
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of
// the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
// </copyright>
// -----------------------------------------------------------------------

namespace Gat.Controls.Framework
{
	using System.ComponentModel;

	public abstract class ViewModelBase : INotifyPropertyChanged
	{
		public event PropertyChangedEventHandler PropertyChanged;

		/// <summary>
		/// Called when a property value has changed.
		/// </summary>
		/// <param name="propertyName">The name of the property that has changed.</param>
		protected virtual void OnPropertyChanged(string propertyName)
		{
			PropertyChangedEventHandler handler = PropertyChanged;
			if(handler != null)
			{
				PropertyChangedEventArgs e = new PropertyChangedEventArgs(propertyName);
				handler(this, e);
			}
		}
	}
}
